咖啡渍牙釉质颜色修复和表面磨损，使用美白和普通牙膏。

Coffee-stained tooth enamel color restoration and surface abrasion with whitening and regular toothpaste.

机构信息

Department of Oral Anatomy and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea.

Department of Conservative Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea.

出版信息

Am J Dent. 2024 Feb;37(1):3-8.

PMID:38458975

Abstract

PURPOSE

To evaluate the effectiveness of whitening toothpaste in restoring tooth color after coffee staining and its potential impact on enamel surfaces compared with regular toothpaste.

METHODS

Bovine tooth enamel specimens were prepared and stained with coffee solutions before undergoing brushing simulation with different toothpaste slurries (whitening, regular, reference). For precise evaluation, spectrophotometric measurements were taken at intervals to assess color changes using the CIELAB (Commission Internationale de l'Éclairage Lab*) color space. Additionally, profilometric measurements were taken to determine the impact of toothpaste type on the roughness and abraded depth of the enamel surface. To understand the effects of toothpaste and brushing on color change, surface roughness, and abraded depth, while also considering correlations between these factors, the findings were analyzed using mixed-effects models.

RESULTS

The whitening toothpaste group demonstrated the highest recovery rate (71%) after 10,000 brushstrokes, followed by the regular toothpaste group (48%) and the reference slurry group (43%). The mixed-effects model analysis revealed that the reference group had a smaller change in lightness (ΔL) than those in the regular toothpaste group. The whitening toothpaste group showed a greater change in lightness on average than those in the regular toothpaste group, with an increase in lightness as the number of brushstrokes increased. According to the roughness and abraded depth data, the whitening toothpaste group was least affected by brushing, while the reference and regular toothpaste groups showed higher levels of roughness and abraded depth at all intervals.

CLINICAL SIGNIFICANCE

Gaining a thorough understanding of the effectiveness of whitening toothpaste and its impact on the enamel surface plays a crucial role in refining toothpaste formulations and advancing tooth whitening techniques in dental care.

摘要

目的

评估美白牙膏在咖啡染色后恢复牙齿颜色的效果，以及与普通牙膏相比对牙釉质表面的潜在影响。

方法

制备牛牙釉质标本，用咖啡溶液染色，然后用不同牙膏糊（美白、普通、参考）进行刷牙模拟。为了进行精确评估，在间隔时间内进行分光光度测量，使用 CIELAB（国际照明委员会实验室*）颜色空间评估颜色变化。此外，进行轮廓测量以确定牙膏类型对牙釉质表面粗糙度和磨损深度的影响。为了了解牙膏和刷牙对颜色变化、表面粗糙度和磨损深度的影响，同时考虑这些因素之间的相关性，使用混合效应模型分析了结果。

结果

在进行 10000 次刷拭后，美白牙膏组的恢复率最高（71%），其次是普通牙膏组（48%）和参考糊组（43%）。混合效应模型分析显示，参考组的明度变化（ΔL）小于普通牙膏组。美白牙膏组的平均明度变化大于普通牙膏组，随着刷拭次数的增加，明度增加。根据粗糙度和磨损深度数据，美白牙膏组受刷牙的影响最小，而参考糊和普通牙膏组在所有间隔时间内显示出更高的粗糙度和磨损深度。